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 Duty-Cycle alumonum RatingPower-supply rating depends on the type and thickness of the workpiece and the length of time air it takes to tank deposit the longest weld on the thickest material. Duty cycle is the key factor alumonum and air to consider when selecting a tank power source. alumonum Once the air engineer has determined the current and voltage needed to tank accomplish the weld, he then reviews duty cycle requirements.Duty cycle rating is the percentage of time during a 10-minute period a power supply can operate at rated output amperage without overheating. A 300 A machine at 60-percent-duty cycle can weld alumonum for six minutes at 300. A during air a 10-minute period. Alter six minutes, the welder tank must rest the machine alumonum for air the next four minutes to avoid overheating the unit. For flux-cored-arc welding, shops use CV or CC types, 300 to tank and alumonum 1,500 A, 25 to 50 V, air rated 60- to 100-percent-duty cycle. CV types are more popular because wire-feed speed, set before tank welding, controls welding current. alumonum and air Cc types require a variable-speed or voltage-sensing wire tank feeder.Gas-tungsten-arc welding (GTAW) requires a constant-current (AC or DC) power supply alumonum with a steep volt-amp curve to minimize current change for variation in voltage or arc length. They come rated to 1,500 A, 10 to 75 V, air at 40- to 100-percent-duty cycle. Most GTAW power supplies come equipped with high-frequency circuitry for arc initiation and stabilization, gas valves, and cooling-water valves for high-current tank welding. High-frequency arc start is useful when the alumonum maximum air open-circuit voltage allowed by NEMA standards, 80 to 100 V, will not establish tank and maintain a stable arc. Searching for accessories for your air compressor? We offer the best selection of cheap air compressor accessories on the internet. Check out our website for great deales on all of our air compressor accessories!
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